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Rent NowYkeasu Mount Adapter EF-EOS R
Seamless EF/EF-S Lens Integration for Canon R-Series Mirrorless Systems
The Ykeasu Mount Adapter EF-EOS R is a high-precision, electronic lens adapter engineered to bridge the gap between Canon’s legendary DSLR legacy and its cutting-edge mirrorless future. This adapter allows you to mount the entire catalog of full-frame Canon EF and APS-C format EF-S lenses onto any Canon RF-mount mirrorless camera body. Built with gold-plated electronic contacts to maintain absolute communication between the lens and camera, it preserves native autofocus speeds, image stabilization, and metadata transfer. It is an essential, cost-effective tool for photographers and filmmakers looking to preserve their valuable glass investments while stepping up to full-frame mirrorless performance.
Key Features & Engineering
Universal EF/EF-S to RF Compatibility: Seamlessly adapts any native or third-party (Sigma, Tamron, Tokina) Canon EF and EF-S mount lenses to the modern Canon RF mirrorless ecosystem—including the EOS R, RP, R5, R6, R7, R10, and R8.
Flawless Electronic Communication: Outfitted with premium gold-plated electronic data pins that ensure instantaneous metadata transmission. The camera body natively recognizes the attached lens, retaining full EXIF data logging and in-camera lens correction functionality.
Uncompromised AF & Exposure Tracking: Preserves lightning-fast, native autofocus response speeds—including full compatibility with Canon’s Dual Pixel CMOS AF tracking, Eye AF, and real-time subject detection—alongside continuous auto-exposure (AE).
Optical Image Stabilization Support: Fully supports lens-based Optical Image Stabilization (IS). When paired with a stabilized mirrorless body, it enables coordinated control between the lens mechanics and the camera’s internal sensor-shift stabilization.
Rugged All-Metal Construction: Manufactured with heavy-duty aluminum alloy bayonets on both the camera and lens sides to ensure structural rigidity. This precise, wiggle-free connection reliably supports heavy telephoto zooms without flexing.
Anti-Reflective Internal Coating: The interior barrel features a matte black, anti-reflective coating that absorbs stray light and prevents internal reflections, preserving maximum image contrast and preventing lens flare.
Smart APS-C Auto-Crop: When an EF-S lens is attached to a full-frame RF-mount camera, the adapter automatically communicates the lens format to the body, prompting the camera to switch to its designated APS-C crop mode seamlessly.
Technical Specifications
Adapter Type: Electronic Lens Mount Adapter
Lens Mount Compatibility: Canon EF / EF-S
Camera Mount Compatibility: Canon RF (Mirrorless)
Electronic Contacts: Gold-Plated Pins (Full Autofocus, IS, Aperture Control, and EXIF support)
Material Composition: Aluminum Alloy Chassis with Chromed Brass Mounts
Interior Finish: Matte Black Anti-Reflective Coating
Dimensions (Diameter x Depth): Approx. 2.8 x 0.94 inches / 71 x 24 mm
Weight: Approx. 3.9 oz / 110 g
